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thunder2020 / arducopter

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MinimOSD always shows "Update Charset" on power up when connected to APM, requires hard reset before use #519

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. Apply power to all components simultaneously (APM, OSD, etc).
2. After a few seconds, OSD will show "Update Charset" and stop.
3. In order to use OSD, must hard reset it.
4. The only other option is to wait ~20 seconds before applying power to the 
OSD (after powering the APM).

What is the expected output? What do you see instead?
-> OSD should boot and be usable without a hard reset first.

What version of the product are you using? On what operating system?
-> APM 2.0 with 2.8.1, minimOSD 2.0, Xbee 900.

Please provide any additional information below:
-> This problem is fairly well documented here: 
http://diydrones.com/forum/topics/minimosd-says-update-charset-on-bootup-must-re
set-first?id=705844%3ATopic%3A805912&page=1#comments
-> Basically the APM is sending 3 returns, causing the OSD to go into Update 
Charset mode.  I imagine this method is required for getting into update mode, 
but it would be very beneficial if there is a good way to avoid the false 
positive when simply booting up to fly.

POSSIBLE SOLUTION -> Based on my understanding of the GCS software, if we 
increase the TELEMETRY DELAY max value from 10 to, say, 25 seconds, this 
problem would go away because we could go beyond the 20 second window for 
Update Charset mode on the minimOSD firmware.

Original issue reported on code.google.com by debak...@hotmail.com on 12 Nov 2012 at 7:13

GoogleCodeExporter commented 8 years ago 
Tried changing the TELEM DELAY to 25 and larger values via the parm setting, 
but clearly this did not have the desired affect.  Is there a way to fully 
"silence" the uart port during this time period?

Original comment by debak...@hotmail.com on 14 Nov 2012 at 5:47

GoogleCodeExporter commented 8 years ago 
this is the best

https://code.google.com/p/minimosd-extra/wiki/index?tm=6

Original comment by martinl...@hotmail.com on 25 Jan 2013 at 1:17

GoogleCodeExporter commented 8 years ago 
Closing all issues on the old issues list by marking them WontFix.

If this is still a valid issue please re-raise it on the new GitHub issues 
list: https://github.com/diydrones/ardupilot/issues

Thanks!

Original comment by rmackay...@gmail.com on 21 Jul 2013 at 2:14